2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
22 #include "shared/view.h"
24 #include <dali/dali.h>
25 #include <dali-toolkit/dali-toolkit.h>
26 #include <dali-toolkit/devel-api/shader-effects/dissolve-effect.h>
30 using Dali::Toolkit::TextLabel;
36 const char * const TOOLBAR_IMAGE( DALI_IMAGE_DIR "top-bar.png" );
37 const char * const APPLICATION_TITLE_HIGHP( "Dissolve Effect(highp)" );
38 const char * const APPLICATION_TITLE_MEDIUMP( "Dissolve Effect(mediump)" );
39 const char * const EFFECT_HIGHP_IMAGE( DALI_IMAGE_DIR "icon-highp.png" );
40 const char * const EFFECT_MEDIUMP_IMAGE( DALI_IMAGE_DIR "icon-mediump.png" );
41 const char * const PLAY_ICON( DALI_IMAGE_DIR "icon-play.png" );
42 const char * const STOP_ICON( DALI_IMAGE_DIR "icon-stop.png" );
44 const char* IMAGES[] =
46 DALI_IMAGE_DIR "gallery-large-1.jpg",
47 DALI_IMAGE_DIR "gallery-large-2.jpg",
48 DALI_IMAGE_DIR "gallery-large-3.jpg",
49 DALI_IMAGE_DIR "gallery-large-4.jpg",
50 DALI_IMAGE_DIR "gallery-large-5.jpg",
51 DALI_IMAGE_DIR "gallery-large-6.jpg",
52 DALI_IMAGE_DIR "gallery-large-7.jpg",
53 DALI_IMAGE_DIR "gallery-large-8.jpg",
54 DALI_IMAGE_DIR "gallery-large-9.jpg",
55 DALI_IMAGE_DIR "gallery-large-10.jpg",
56 DALI_IMAGE_DIR "gallery-large-11.jpg",
57 DALI_IMAGE_DIR "gallery-large-12.jpg",
58 DALI_IMAGE_DIR "gallery-large-13.jpg",
59 DALI_IMAGE_DIR "gallery-large-14.jpg",
60 DALI_IMAGE_DIR "gallery-large-15.jpg",
61 DALI_IMAGE_DIR "gallery-large-16.jpg",
62 DALI_IMAGE_DIR "gallery-large-17.jpg",
63 DALI_IMAGE_DIR "gallery-large-18.jpg",
64 DALI_IMAGE_DIR "gallery-large-19.jpg",
65 DALI_IMAGE_DIR "gallery-large-20.jpg",
66 DALI_IMAGE_DIR "gallery-large-21.jpg",
69 const int NUM_IMAGES( sizeof(IMAGES) / sizeof(IMAGES[0]) );
71 // The duration of the current image staying on screen when slideshow is on
72 const int VIEWINGTIME = 2000; // 2 seconds
74 const float TRANSITION_DURATION = 2.5f; //2.5 second
76 const float INITIAL_DEPTH = -10.0f;
79 * @brief Load an image, scaled-down to no more than the stage dimensions.
81 * Uses image scaling mode SCALE_TO_FILL to resize the image at
82 * load time to cover the entire stage with pixels with no borders,
83 * and filter mode BOX_THEN_LINEAR to sample the image with
86 ResourceImage LoadStageFillingImage( const char * const imagePath )
88 Size stageSize = Stage::GetCurrent().GetSize();
89 return ResourceImage::New( imagePath, ImageDimensions( stageSize.x, stageSize.y ), Dali::FittingMode::SCALE_TO_FILL, Dali::SamplingMode::BOX_THEN_LINEAR );
94 class DissolveEffectApp : public ConnectionTracker
100 * @param application class, stored as reference
102 DissolveEffectApp( Application& application );
104 ~DissolveEffectApp();
109 * This method gets called once the main loop of application is up and running
111 void OnInit( Application& application );
113 * PanGesture callback. This method gets called when the pan gesture is detected.
114 * @param[in] actor The actor receiving the pan gesture.
115 * @param[in] gesture The detected pan gesture.
117 void OnPanGesture( Actor actor, const PanGesture& gesture );
120 * Set up the animations for transition
121 * @param[in] position The point ( locates within rectange {(0,0),(0,1),(1,0),(1,1)} ) passing through the central line of the dissolve effect
122 * @param[in] displacement The direction of the central line of the dissolve effect
124 void StartTransition(Vector2 position, Vector2 displacement);
126 * Callback function of effect-switch button
127 * Change the precision of the effect shader when the effect button is clicked
128 * @param[in] button The handle of the clicked button
130 bool OnEffectButtonClicked( Toolkit::Button button );
132 * Callback function of slideshow button
133 * Start or stop the automatical image display when the slideshow button is clicked
134 * @param[in] button The handle of the clicked button
136 bool OnSildeshowButtonClicked( Toolkit::Button button );
138 * Callback function of cube transition completed signal
139 * @param[in] effect The cube effect used for the transition
140 * @param[in] imageActor The target imageActor of the completed transition
142 void OnTransitionCompleted(Animation& source);
144 * Callback function of timer tick
145 * The timer is used to count the image display duration after cube transition in slideshow,
150 * Main key event handler
152 void OnKeyEvent(const KeyEvent& event);
155 Application& mApplication;
156 Toolkit::Control mView;
157 Toolkit::ToolBar mToolBar;
159 Toolkit::TextLabel mTitleActor;
162 ImageActor mCurrentImage;
163 ImageActor mNextImage;
166 ShaderEffect mCurrentImageEffect;
167 ShaderEffect mNextImageEffect;
168 bool mUseHighPrecision;
169 Animation mAnimation;
171 PanGestureDetector mPanGestureDetector;
177 unsigned int mCentralLineIndex;
181 Toolkit::PushButton mPlayStopButton;
185 Toolkit::PushButton mEffectChangeButton;
188 DissolveEffectApp::DissolveEffectApp( Application& application )
189 : mApplication( application ),
191 mUseHighPrecision(true),
192 mIsTransiting( false ),
194 mTimerReady( false ),
195 mCentralLineIndex( 0 )
197 mApplication.InitSignal().Connect( this, &DissolveEffectApp::OnInit );
200 DissolveEffectApp::~DissolveEffectApp()
205 void DissolveEffectApp::OnInit( Application& application )
207 Stage::GetCurrent().KeyEventSignal().Connect(this, &DissolveEffectApp::OnKeyEvent);
209 // Creates a default view with a default tool bar, the view is added to the stage.
210 mContent = DemoHelper::CreateView( application, mView,mToolBar, "", TOOLBAR_IMAGE, "" );
212 // Add an effect-changing button on the right of the tool bar.
213 mIconHighP = ResourceImage::New( EFFECT_HIGHP_IMAGE );
214 mIconMediumP = ResourceImage::New( EFFECT_MEDIUMP_IMAGE );
215 mEffectChangeButton = Toolkit::PushButton::New();
216 mEffectChangeButton.SetBackgroundImage(mIconHighP);
217 mEffectChangeButton.ClickedSignal().Connect( this, &DissolveEffectApp::OnEffectButtonClicked );
218 mToolBar.AddControl( mEffectChangeButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalRight, DemoHelper::DEFAULT_MODE_SWITCH_PADDING );
220 // Add title to the tool bar.
221 mTitleActor = DemoHelper::CreateToolBarLabel( APPLICATION_TITLE_HIGHP );
222 mToolBar.AddControl( mTitleActor, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarTitlePercentage, Toolkit::Alignment::HorizontalCenter );
224 // Add an slide-show button on the right of the title
225 mIconPlay = ResourceImage::New( PLAY_ICON );
226 mIconStop = ResourceImage::New( STOP_ICON );
227 mPlayStopButton = Toolkit::PushButton::New();
228 mPlayStopButton.SetBackgroundImage( mIconPlay );
229 mPlayStopButton.ClickedSignal().Connect( this, &DissolveEffectApp::OnSildeshowButtonClicked );
230 mToolBar.AddControl( mPlayStopButton, DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage, Toolkit::Alignment::HorizontalCenter, DemoHelper::DEFAULT_PLAY_PADDING );
232 // use pan gesture to detect the cursor or finger movement
233 mPanGestureDetector = PanGestureDetector::New();
234 mPanGestureDetector.DetectedSignal().Connect( this, &DissolveEffectApp::OnPanGesture );
236 // create the dissolve effect object
237 mCurrentImageEffect = Toolkit::CreateDissolveEffect(mUseHighPrecision);
238 mNextImageEffect = Toolkit::CreateDissolveEffect(mUseHighPrecision);
240 mViewTimer = Timer::New( VIEWINGTIME );
241 mViewTimer.TickSignal().Connect( this, &DissolveEffectApp::OnTimerTick );
244 // Set size to stage size to avoid seeing a black border on transition
245 mParent = Actor::New();
246 mParent.SetSize( Stage::GetCurrent().GetSize() );
247 mParent.SetPositionInheritanceMode( USE_PARENT_POSITION );
248 mContent.Add( mParent );
250 // show the first image
251 mCurrentImage = ImageActor::New( LoadStageFillingImage( IMAGES[mIndex] ) );
252 mCurrentImage.SetPositionInheritanceMode(USE_PARENT_POSITION_PLUS_LOCAL_POSITION);
253 mCurrentImage.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
254 mCurrentImage.SetSizeScalePolicy( SizeScalePolicy::FIT_WITH_ASPECT_RATIO );
255 mParent.Add( mCurrentImage );
257 mPanGestureDetector.Attach( mCurrentImage );
260 // signal handler, called when the pan gesture is detected
261 void DissolveEffectApp::OnPanGesture( Actor actor, const PanGesture& gesture )
263 // does not response when the animation has not finished
264 if( mIsTransiting || mSlideshow )
269 if( gesture.state == Gesture::Continuing )
271 if( gesture.displacement.x < 0)
273 mIndex = (mIndex + 1)%NUM_IMAGES;
277 mIndex = (mIndex + NUM_IMAGES -1)%NUM_IMAGES;
280 Image image = LoadStageFillingImage( IMAGES[ mIndex ] );
281 mNextImage = ImageActor::New( image );
282 mNextImage.SetPositionInheritanceMode(USE_PARENT_POSITION_PLUS_LOCAL_POSITION);
283 mNextImage.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
284 mNextImage.SetSizeScalePolicy( SizeScalePolicy::FIT_WITH_ASPECT_RATIO );
285 mNextImage.SetZ(INITIAL_DEPTH);
286 mParent.Add( mNextImage );
287 Vector2 size = Vector2( mCurrentImage.GetCurrentSize() );
288 StartTransition( gesture.position / size, gesture.displacement * Vector2(1.0, size.x/size.y));
292 void DissolveEffectApp::StartTransition(Vector2 position, Vector2 displacement)
294 mAnimation = Animation::New(TRANSITION_DURATION);
296 Dali::Toolkit::DissolveEffectSetCentralLine( mCurrentImageEffect, position, displacement );
297 mCurrentImageEffect.SetUniform("uPercentage", 0.0f);
298 mCurrentImage.SetShaderEffect(mCurrentImageEffect);
299 mAnimation.AnimateTo( Property(mCurrentImageEffect, "uPercentage"), 1.0f, AlphaFunction::LINEAR );
301 mNextImage.SetOpacity(0.0f);
302 mAnimation.AnimateTo( Property( mNextImage, Actor::Property::COLOR_ALPHA ), 1.0f, AlphaFunction::LINEAR );
304 if(mUseHighPrecision)
306 Dali::Toolkit::DissolveEffectSetCentralLine( mNextImageEffect, position, displacement );
307 mNextImageEffect.SetUniform("uPercentage", 1.0f);
308 mNextImage.SetShaderEffect(mNextImageEffect);
309 mAnimation.AnimateTo( Property(mNextImageEffect, "uPercentage"), 0.0f, AlphaFunction::LINEAR );
313 mAnimation.AnimateTo( Property( mNextImage, Actor::Property::POSITION ), Vector3( 0.0f, 0.0f, 0.0f ), AlphaFunction::LINEAR );
316 mAnimation.FinishedSignal().Connect( this, &DissolveEffectApp::OnTransitionCompleted );
318 mIsTransiting = true;
321 void DissolveEffectApp::OnKeyEvent(const KeyEvent& event)
323 if(event.state == KeyEvent::Down)
325 if( IsKey( event, Dali::DALI_KEY_ESCAPE) || IsKey( event, Dali::DALI_KEY_BACK) )
332 bool DissolveEffectApp::OnEffectButtonClicked( Toolkit::Button button )
334 mUseHighPrecision = !mUseHighPrecision;
335 mCurrentImageEffect = Dali::Toolkit::CreateDissolveEffect(mUseHighPrecision);
336 if(mUseHighPrecision)
338 mTitleActor.SetProperty( TextLabel::Property::TEXT, std::string(APPLICATION_TITLE_HIGHP) );
339 mEffectChangeButton.SetBackgroundImage(mIconHighP);
343 mTitleActor.SetProperty( TextLabel::Property::TEXT, std::string(APPLICATION_TITLE_MEDIUMP) );
344 mEffectChangeButton.SetBackgroundImage(mIconMediumP);
350 bool DissolveEffectApp::OnSildeshowButtonClicked( Toolkit::Button button )
352 mSlideshow = !mSlideshow;
355 mPlayStopButton.SetBackgroundImage( mIconStop );
356 mPanGestureDetector.Detach( mParent );
362 mPlayStopButton.SetBackgroundImage( mIconPlay );
364 mPanGestureDetector.Attach( mParent );
369 void DissolveEffectApp::OnTransitionCompleted( Animation& source )
371 mCurrentImage.RemoveShaderEffect();
372 mNextImage.RemoveShaderEffect();
373 mParent.Remove( mCurrentImage );
374 mPanGestureDetector.Detach( mCurrentImage );
375 mCurrentImage = mNextImage;
376 mPanGestureDetector.Attach( mCurrentImage );
377 mIsTransiting = false;
386 bool DissolveEffectApp::OnTimerTick()
391 mIndex = (mIndex + 1)%NUM_IMAGES;
392 Image image = LoadStageFillingImage( IMAGES[ mIndex ] );
393 mNextImage = ImageActor::New( image );
394 mNextImage.SetPositionInheritanceMode(USE_PARENT_POSITION_PLUS_LOCAL_POSITION);
395 mNextImage.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
396 mNextImage.SetSizeScalePolicy( SizeScalePolicy::FIT_WITH_ASPECT_RATIO );
397 mNextImage.SetZ(INITIAL_DEPTH);
398 mParent.Add( mNextImage );
399 switch( mCentralLineIndex%4 )
403 StartTransition(Vector2(1.0f,0.5f), Vector2(-1.0f, 0.0f));
408 StartTransition(Vector2(0.5f,0.0f), Vector2(0.0f, 1.0f));
413 StartTransition(Vector2(0.0f,0.5f), Vector2(1.0f, 0.0f));
418 StartTransition(Vector2(0.5f,1.0f), Vector2(0.0f, -1.0f));
425 return false; //return false to stop the timer
428 // Entry point for Linux & Tizen applications
429 int main( int argc, char **argv )
431 Application application = Application::New( &argc, &argv, DALI_DEMO_THEME_PATH );
432 DissolveEffectApp test( application );
433 application.MainLoop();